Ok. This is a good song Tracy Chapman.

TALKIN’BOUT A REVOLUTION
Don’t you know
They’re talkin’ bout a revolution
It sounds like a whisper
Don’t you know
They’re talkin’ about a revolution
It sounds like a whisper
While they’re standing in the welfare lines
Crying at the doorsteps of those armies of salvation
Wasting time in the unemployment lines
Sitting around waiting for a promotion
Poor people gonna rise up
And get their share
Poor people gonna rise up
And take what’s theirs
Don’t you know
You better run, run, run…
Oh I said you better Run, run, run…
Finally the tables are starting to turn
Talkin’ bout a revolution

2 phrases stick out in my mind. “Armies of Salvation” is an obvious reference to the Salvation Army which provides assistance to the downtrodden. I wouldn’t necessarily equate “Army” with “Salvation.”
And the “waiting for a promotion.” Almost as if even the homeless and downtrodden are waiting for that promotion…. “Promotion” – a word almost equated with the rich and powerful. Or even those employeed. Hence a promotion could mean anything that gets you out of the situation that you’re currently in, to a better situation.